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Aluminum alloy anode material for battery and manufacturing method thereof

A technology of anode material and manufacturing method, which is applied in the field of anode material for battery, aluminum alloy anode material for battery and its manufacturing field, can solve the problem of unsatisfactory properties such as open circuit potential, working potential, actual capacity current efficiency and surface dissolution state, etc. problems, to achieve the effects of excellent electrochemical performance, improved utilization, and reasonable compatibility

Active Publication Date: 2010-12-01
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still unsatisfactory factors in terms of open circuit potential, working potential, actual capacitance, current efficiency, and surface dissolution.

Method used

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  • Aluminum alloy anode material for battery and manufacturing method thereof
  • Aluminum alloy anode material for battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] According to the composition of Example 1 mass percentage in Table 1, the aluminum ingot is first added to the graphite crucible and melted in a resistance furnace. When the temperature of the melt is 660 ° C, metal Sn is added. After the melt is refined, the temperature is 730 ° C. Add other alloying elements under certain conditions, stir thoroughly with a graphite rod after the metal Mg is completely melted, add hexachloroethane to remove slag, pass in argon to degas, the argon pressure is 0.1MPa, and the ventilation time is 3-5 minutes. After degassing and slag removal, let stand for 1-5 minutes, and cast into flat ingots.

[0038] The cast flat ingot was uniformly annealed at a temperature of 550°C for 120 minutes, water-cooled, and after face milling, the aluminum alloy flat ingot was cold-rolled at a temperature of 200°C to a finished aluminum alloy anode material with a thickness of 0.5mm.

Embodiment 2

[0040] Dosing according to the composition of Example 2 in Table 1 by mass percentage, first put the aluminum ingot into the graphite crucible and melt it in a resistance furnace, when the temperature of the melt is 680°C, add metal Sn, and after the melt is refined, heat it at a temperature of 750°C Add other alloying elements under certain conditions, stir thoroughly with a graphite rod after the metal Mg is completely melted, add hexachloroethane to remove slag, pass in argon to degas, the argon pressure is 0.05MPa, and the ventilation time is 3-5 minutes. After degassing and slag removal, let stand for 1-5 minutes, and cast into flat ingots.

[0041] The cast flat ingot was uniformly annealed at a temperature of 560°C for 60 minutes, water-cooled, and after face milling, the aluminum alloy flat ingot was cold-rolled at a temperature of 180°C to a finished aluminum alloy anode material with a thickness of 0.6mm.

Embodiment 3

[0043] According to the composition of Example 3 mass percentage in Table 1, the aluminum ingot is first added to the graphite crucible and melted in a resistance furnace. When the temperature of the melt is 670 ° C, metal Sn is added. Add other alloying elements under certain conditions, stir thoroughly with a graphite rod after metal Mg is completely melted, add hexachloroethane to remove slag, pass in argon to degas, the argon pressure is 0.2MPa, and the ventilation time is 3-5 minutes. After degassing and slag removal, let stand for 1-5 minutes, and cast into flat ingots.

[0044] The cast flat ingot was uniformly annealed at a temperature of 530°C for 180 minutes, water-cooled, and after face milling, the aluminum alloy flat ingot was cold-rolled at a temperature of 220°C to a finished aluminum alloy anode material with a thickness of 0.4 mm.

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Abstract

The invention provides an aluminum alloy anode material for a battery and a manufacturing method thereof, belonging to the technical field of alloy materials and solving the problem that the electrochemical property of the traditional aluminum alloy anode material for batteries is not ideal. The aluminum alloy anode material for the battery comprises the following ingredients in percentage by mass: 0.5 to 2.0 percent of Mg, 0.005 to 0.5 percent of Ga, 0.005-1.0 percent of Bi, 0.005 to 1.0 percent of Sn, 0.005 to 0.2 percent of In, 0.005 to 0.05 percent of Ca, and the balance of Al. The aluminum alloy anode material for the battery has the advantages of high electrochemical property and low self-corrosion rate.

Description

technical field [0001] The invention relates to an anode material for batteries, in particular to an aluminum alloy anode material for batteries and a manufacturing method thereof, and belongs to the technical field of alloy materials. Background technique [0002] Aluminum alloy has its unique advantages as the anode material of the battery: (1) High electrochemical equivalent. The electrochemical equivalent of aluminum is 2980A h / kg, which is the metal with the highest mass specific energy except lithium; (2) The electrode potential is relatively negative, and its standard electrode potential is -2.35V. For anode materials, the more negative the potential, the better , the potential of aluminum is negative to that of zinc, so it can provide more power; (3) aluminum is rich in resources and low in price; (4) it has a wide range of applications. For batteries, it can be made into alkaline, neutral and organic batteries . Therefore, aluminum is an excellent battery anode ac...

Claims

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Application Information

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IPC IPC(8): H01M4/06H01M4/08
Inventor 丁荣辉曲明洋黄文辉曾凡清张超
Owner ZHEJIANG GKO IND CO LTD
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